Temperature control method, electric heating equipment and device, electronic equipment and storage medium

Abstract

The invention provides a temperature control method of electric heating equipment, the electric heating equipment, a device, electronic equipment and a storage medium, and relates to the technical field of the electric heating equipment.The method comprises the steps that after the electric heating equipment is started at a full power gear, the temperature rise rate of a temperature sensing bulb in the electric heating equipment in a preset monitoring window is obtained, if it is detected that the electric heating equipment is in the abnormal state according to the temperature rising rate, temperature rising promoting operation on the electric heating equipment is executed to trigger a temperature limiter in the electric heating equipment, and therefore the temperature rising process of the electric heating equipment is monitored according to the temperature rising rate, whether the electric heating equipment is in the abnormal state or not can be accurately detected; the overheat protection response rate is improved, protection is ensured to be triggered in time, under the condition that an abnormal state is detected, operation is promoted through temperature rising, a temperature limiter of the electric heating equipment is triggered, safety protection is achieved by actively triggering the temperature limiter, temperature out-of-control in the abnormal state is avoided, and the controllability of the electric heating equipment in the using process is improved.

Description

Temperature control methods, electric heating equipment, devices, electronic equipment and storage media Technical Field

[0001] This invention relates to the field of electric heating equipment technology, and in particular to a temperature control method for an electric heating equipment, an electric heating equipment, a temperature control device for an electric heating equipment, an electronic device, and a readable storage medium. Background Technology

[0002] For electric heating devices such as oil-filled radiators, they must pass rigorous safety tests before being marketed. One key test is the temperature rise test simulating an abnormal working condition where the product surface is covered by a covering (such as felt strips). This test aims to assess whether the product can promptly cut off or reduce heating power in case of abnormal heat dissipation, preventing the covering from catching fire due to continuous overheating. However, in the actual safety test's initiation phase, due to low ambient temperatures or limited heat transfer paths, the temperature-sensing element often heats up slowly. This can easily lead to the temperature detected by the sensing element failing to reach the preset threshold for triggering protection within the specified test time window, preventing the protection device from being triggered promptly and reliably. The direct consequence is that the heating power cannot be effectively cut off or reduced, the covering continues to be heated, and ultimately its temperature rise exceeds safety standards, resulting in test failure. Summary of the Invention

[0003] This invention provides a temperature control method, electric heating device, apparatus, electronic device, and readable storage medium for electric heating equipment, to solve or partially solve the problem that the electric heating equipment cannot trigger protection in time due to the slow heating of the temperature sensing element, resulting in the temperature rise of the covering material exceeding the standard.

[0004] This invention discloses a temperature control method for an electric heating device, comprising: in response to the electric heating device being started at full power, acquiring the heating rate of the temperature sensor in the electric heating device within a preset monitoring window; if the electric heating device is detected to be in an abnormal state based on the heating rate, then performing a heating promotion operation for the electric heating device to trigger the temperature limiter in the electric heating device.

[0005] In some feasible implementations, the step of executing a temperature-boosting operation on the electric heating device to trigger a temperature limiter in the electric heating device if the heating rate is detected to be in an abnormal state includes: if the heating rate is greater than or equal to a preset rate threshold, obtaining the current temperature of the temperature sensing element; if the current temperature is less than a first preset temperature threshold, executing a temperature-boosting operation on the electric heating device to increase the current temperature of the temperature sensing element; if the current temperature is greater than or equal to the first preset temperature threshold, triggering a temperature limiter in the electric heating device to reduce the operating power of the electric heating device to 0.

[0006] In some feasible implementations, the preset monitoring window includes a first monitoring window, and obtaining the heating rate of the temperature sensing element in the electric heating device within the preset monitoring window includes: determining a first time period after the electric heating device is started; and calculating a first heating rate of the temperature sensing element within the first monitoring window starting from the first time period.

[0007] In some feasible implementations, the preset monitoring window further includes a second monitoring window, and the step of obtaining the heating rate of the temperature sensing element in the electric heating device within the preset monitoring window further includes: if the first heating rate is less than the preset rate threshold, then calculating the second heating rate of the temperature sensing element within the second monitoring window starting from the end of the first monitoring window.

[0008] In some feasible implementations, the step of obtaining the current temperature of the temperature sensing pack if the heating rate is greater than or equal to a preset rate threshold includes: obtaining the current temperature of the temperature sensing pack if the first heating rate or the second heating rate is greater than or equal to the preset rate threshold.

[0009] In some feasible implementations, the execution of the temperature-boosting operation for the electric heating device includes: controlling the electric heating device to operate at full power and not performing a power-reduction operation based on the current temperature of the temperature sensor.

[0010] In some feasible implementations, the method further includes: if no abnormal state is detected in the electric heating device according to the heating rate, then the current temperature of the temperature sensor is obtained; if the current temperature is greater than or equal to a third preset temperature threshold, then the electric heating device is controlled to reduce its power; if the current temperature is less than the third preset temperature threshold and greater than or equal to a fourth preset temperature threshold, then the electric heating device is controlled to maintain its current operating state; if the current temperature is less than the fourth preset temperature threshold, then the device is controlled to resume full power operation.

[0011] In some feasible implementations, the method further includes: in response to the power-on of the electric heating device, obtaining the ambient temperature of the environment in which the electric heating device is located; if the ambient temperature is greater than a second preset temperature threshold, executing a first temperature control mode; if the ambient temperature is less than or equal to the second preset temperature threshold, executing a second temperature control mode; wherein, the first temperature control mode includes the temperature control method described in the embodiments of the present invention.

[0012] In some feasible implementations, the method further includes: in the second temperature control mode, if the real-time temperature of the temperature sensor is greater than or equal to a fifth preset temperature threshold, the electric heating device is controlled to reduce its power; if the real-time temperature of the temperature sensor is less than a sixth preset temperature threshold, the electric heating device is controlled to resume or maintain full power operation; wherein the fifth preset temperature threshold is greater than a third preset temperature threshold.

[0013] In some feasible implementations, the temperature threshold used to control power in the first temperature control mode is lower than the corresponding temperature threshold used to control power in the second temperature control mode.

[0014] This invention also discloses an electric heating device, comprising at least: a heating unit; a temperature sensing bulb; a temperature limiter; and a controller electrically connected to the heating unit and the temperature sensing bulb respectively; wherein the controller is used to execute the temperature control method as described in this invention.

[0015] In some feasible implementations, the temperature limiter is a mechanically manually reset temperature limiter.

[0016] This invention also discloses a temperature control device for an electric heating device, comprising: a rate acquisition module, configured to acquire the heating rate of the temperature sensing element in the electric heating device within a preset monitoring window after the electric heating device is started at full power; and an execution module, configured to execute a heating promotion operation for the electric heating device to trigger the temperature limiter in the electric heating device if the electric heating device is detected to be in an abnormal state based on the heating rate.

[0017] In some feasible implementations, the execution module is specifically used to: if the heating rate is greater than or equal to a preset rate threshold, obtain the current temperature of the temperature sensing pack; if the current temperature is less than a first preset temperature threshold, perform a heating promotion operation on the electric heating device to increase the current temperature of the temperature sensing pack; if the current temperature is greater than or equal to the first preset temperature threshold, trigger the temperature limiter in the electric heating device to reduce the operating power of the electric heating device to 0.

[0018] In some feasible implementations, the preset monitoring window includes a first monitoring window, and the rate acquisition module is specifically used to: determine the first time period elapsed after the electric heating device is started; in some feasible implementations, the preset monitoring window also includes a second monitoring window, and the rate acquisition module is further used to: if the first heating rate is less than the preset rate threshold, calculate the second heating rate of the temperature sensing bulb within the second monitoring window starting from the end of the first monitoring window.

[0019] In some feasible implementations, the execution module is specifically used to: if the first heating rate or the second heating rate is greater than or equal to a preset rate threshold, then obtain the current temperature of the temperature sensing bag.

[0020] In some feasible implementations, the execution module is specifically used to: control the electric heating device to maintain full power operation and not to perform a power reduction operation based on the current temperature of the temperature sensor.

[0021] In some feasible implementations, the system further includes: a temperature acquisition module, used to acquire the current temperature of the temperature sensor if no abnormal state is detected in the electric heating device based on the heating rate; a first control module, used to control the electric heating device to reduce its power if the current temperature is greater than or equal to a third preset temperature threshold; a second control module, used to control the electric heating device to maintain its current operating state if the current temperature is less than the third preset temperature threshold and greater than or equal to a fourth preset temperature threshold; and a third control module, used to control the system to restore full power operation if the current temperature is less than the fourth preset temperature threshold.

[0022] In some feasible implementations, the method further includes: an ambient temperature acquisition module, used to acquire the ambient temperature of the environment in which the electric heating device is located in response to the power-on of the electric heating device; a first mode selection module, used to execute a first temperature control mode if the ambient temperature is greater than a second preset temperature threshold; and a second mode selection module, used to execute a second temperature control mode if the ambient temperature is less than or equal to the second preset temperature threshold; wherein the first temperature control mode includes the temperature control method described in the embodiments of the present invention.

[0023] In some feasible implementations, the following are also included: a fourth control module, used to control the electric heating device to reduce power operation if the real-time temperature of the temperature sensing element is greater than or equal to a fifth preset temperature threshold in the second temperature control mode; a fifth control module, used to control the electric heating device to resume or maintain full power operation if the real-time temperature of the temperature sensing element is less than a sixth preset temperature threshold; wherein the fifth preset temperature threshold is greater than a third preset temperature threshold.

[0024] In some feasible implementations, the temperature threshold used to control power in the first temperature control mode is lower than the corresponding temperature threshold used to control power in the second temperature control mode.

[0025] This invention also discloses an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; the memory is used to store computer programs; and the processor is used to execute the programs stored in the memory to implement the method described in this invention.

[0026] This invention also discloses a readable storage medium storing instructions that, when executed by one or more processors, cause the processors to perform the method described in this invention.

[0027] The embodiments of the present invention have the following advantages: In the embodiments of the present invention, regarding the temperature control process of the electric heating device, after the electric heating device is started at full power, the heating rate of the temperature sensing bulb in the electric heating device within a preset monitoring window is obtained. If the electric heating device is detected to be in an abnormal state based on the heating rate, a heating promotion operation is executed to trigger the temperature limiter in the electric heating device. Thus, the heating process of the electric heating device is monitored through the heating rate. On the one hand, it can accurately detect whether the electric heating device is in an abnormal state, improve the response rate of overheat protection, and ensure that protection can be triggered in a timely manner. On the other hand, when the electric heating device is detected to be in an abnormal state, the heating promotion operation triggers the temperature limiter of the electric heating device. By actively triggering the temperature limiter, safety protection is achieved, avoiding temperature runaway in abnormal states (such as the temperature of the covering exceeding the standard), and improving the controllability of the electric heating device during use. Attached Figure Description

[0028] Figure 1 is a schematic diagram of an abnormal temperature rise curve provided in an embodiment of the present invention; Figure 2 is a schematic diagram of a normal temperature rise curve provided in an embodiment of the present invention; Figure 3 is a flowchart of the steps of a temperature control method for an electric heating device provided in an embodiment of the present invention; Figure 4 is a schematic diagram of an electric heating device provided in an embodiment of the present invention; Figure 5 is a structural schematic diagram of a temperature sensing bulb provided in an embodiment of the present invention; Figure 6 is a schematic diagram of the overall control logic provided in an embodiment of the present invention; Figure 7 is a structural block diagram of a temperature control device for an electric heating device provided in an embodiment of the present invention. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] As an example, balancing rapid heating experience with overheat protection is a major technical challenge in the safety regulation testing and actual use of electric heating devices, especially radiant heating products such as oil-filled radiators. Traditional temperature control schemes often rely on the absolute temperature threshold detected by the temperature sensor (e.g., shutting down or reducing power when the detected temperature reaches a preset high temperature point such as 75°C or 90°C) or fixed delay control. However, in safety regulation tests simulating abnormal operating conditions of the product surface covered by materials (such as test felt strips), the heat is difficult to dissipate due to the insulation effect of the covering, causing the temperature of the covering to rise sharply. For example, referring to Figure 1, a schematic diagram of the abnormal temperature rise curve provided in an embodiment of the present invention is shown, and referring to Figure 2, a schematic diagram of the normal temperature rise curve provided in an embodiment of the present invention is shown. However, since the temperature sensor is usually installed inside the product rather than in direct contact with the covering, there is a significant thermal inertia delay in its heating process. This delay means that the temperature detected by the temperature sensor may not reach the preset threshold for triggering the mechanical temperature limiter (such as a manually reset type temperature limiter, with an activation temperature typically of 90°C) within the critical time window specified in the test (e.g., the first 5-7 minutes). The direct consequence is that the temperature limiter cannot be triggered promptly and reliably, resulting in continuous heating power output. Ultimately, this causes the temperature rise of the covered material to exceed safety standards (e.g., GB4706), leading to test failure and creating a fire hazard.

[0031] Furthermore, in order to ensure that safety tests are passed, the relevant technologies may adopt overly conservative strategies in normal use, such as reducing power too early, resulting in insufficient heating effect and a decline in user experience; or, in order to ensure the daily user experience, relaxing the protection threshold may lead to slow response in extreme abnormal situations, making it difficult to achieve a dynamic and intelligent balance between ensuring the pass rate of stringent safety tests and ensuring the comfort and reliability of daily use.

[0032] To address this, this invention abandons the passive waiting for a single absolute temperature and instead actively monitors the temperature rise rate of the sensing element during the critical window period after the electric heating device is started. This serves as an early, dynamic indicator to determine whether the device is in an abnormal operating state (such as the electric heating device being covered). When an abnormally rapid temperature rise trend is detected, the system does not immediately reduce power but executes a reverse logic "temperature rise promotion" operation, intentionally maintaining full power operation to accelerate the temperature rise of the sensing element, thereby actively and reliably triggering the mechanical temperature limiter to completely cut off power. For normal temperature rise situations, it seamlessly switches to a refined, comfort-oriented constant temperature control logic. Simultaneously, through prior ambient temperature judgment, the system intelligently selects either a sensitive mode suitable for "normal temperature safety testing conditions" or a lenient mode suitable for "low temperature daily use conditions," achieving global optimization of safety and energy efficiency.

[0033] Referring to Figure 3, a flowchart of the steps of a temperature control method for an electric heating device provided in an embodiment of the present invention is shown. Specifically, it may include the following steps: Step 301, in response to the electric heating device starting at full power, acquiring the heating rate of the temperature sensor within a preset monitoring window; For electric heating devices, such as oil-filled radiators, their control system (hereinafter referred to as the system) typically includes a main control MCU (microcontroller unit), a thermistor-type temperature sensor for detecting internal or air intake temperature, a mechanical manual reset temperature limiter connected in series in the main heating circuit (typically set to operate at 90°C), a power drive circuit (such as a relay or thyristor), and an ambient temperature sensor for detecting ambient temperature. Optionally, the main control MCU can act as an "intelligent temperature control hub," responsible for executing the core algorithm involved in the embodiments of the present invention.

[0034] In this embodiment of the invention, when the user starts the electric heating device via the panel or remote control and sets it to the highest heating level (i.e., "full power"), the system does not immediately enter a simple timed or temperature-controlled cycle. The main control MCU can first initiate a preset monitoring process. The core objective is to calculate and evaluate the rate of temperature change of the temperature sensor within a specific time window in real time, i.e., the heating rate, so as to detect abnormalities in the heat dissipation status of the electric heating device through this heating rate and determine whether the electric heating device is in an abnormal state.

[0035] In some feasible implementations, before determining whether the electric heating device is in an abnormal state based on the heating rate of the temperature sensor, the system can first perform a preliminary environmental adaptive judgment process to determine which temperature control strategy set to activate. Specifically, in response to the power-on of the electric heating device, the ambient temperature of the environment in which the electric heating device is located is obtained. If the ambient temperature is greater than a second preset temperature threshold, the first temperature control mode is executed; if the ambient temperature is less than or equal to the second preset temperature threshold, the second temperature control mode is executed. In the first temperature control mode, the temperature threshold used to control power is lower than the corresponding temperature threshold used to control power in the second temperature control mode.

[0036] In a specific implementation, the temperature sensing element of the electric heating device may include a device temperature sensing element and an ambient temperature sensing element. The device temperature sensing element is used to collect the temperature inside the front shell of the electric heating device, while the ambient temperature sensing element is used to collect the ambient temperature of the environment in which the electric heating device is located. The temperature change collected by the device temperature sensing element (hereinafter referred to as the device temperature sensing element) can be used to determine the heating rate in the aforementioned embodiments.

[0037] Specifically, in response to the power-on of the electric heating device, the system obtains the ambient temperature T_env of the environment in which the heating device is located through an ambient temperature sensor. After obtaining T_env, the system compares it with a preset temperature threshold T_env_th (e.g., 19°C). This threshold can be used to distinguish whether the device is operating in a "high-temperature" environment close to the safety testing conditions or in a typical low-temperature winter heating environment; this invention does not impose limitations on this. If the ambient temperature is greater than a second preset temperature threshold (i.e., T_env > 19°C), the system can determine that the current environment is closer to the "risk-prone" conditions of concern in safety testing. In this environment, the covering material will heat up faster due to the high initial ambient temperature, and the safety hazard will be more prominent. Therefore, the system executes the first temperature control mode, which is a complete set of intelligent protection logic based on the heating rate judgment and active triggering of the temperature limiter.

[0038] Correspondingly, if the ambient temperature is less than or equal to the second preset temperature threshold (i.e., T_env≤19℃), the system can determine that the current situation is a typical low-temperature heating scenario, and the user's core need is rapid and comfortable heating. Therefore, the system executes the second temperature control mode, which focuses on energy efficiency and comfort. By setting dual modes, the first mode (safety mode) can use a lower threshold (such as 42℃ mentioned later) for daily comfort control and proactively handle abnormalities; the second mode (winter mode) can use a higher threshold (such as 75℃) for overheat protection and pursue continuous high heat output in daily use. This enriches the temperature control processing methods of electric heating devices in different usage scenarios and effectively ensures the safety of electric heating devices during use.

[0039] Optionally, in the second temperature control mode, the system's control core can be a PID (proportional-integral-derivative) or fuzzy control based on "absolute temperature," with a different set temperature threshold than in the first temperature control mode, thus reflecting differentiated processing for different scenarios. Specifically, if the real-time temperature of the temperature sensor is greater than or equal to the fifth preset temperature threshold, the electric heating device is controlled to reduce its power; if the real-time temperature of the temperature sensor is less than the sixth preset temperature threshold, the electric heating device is controlled to resume or maintain full power operation. The fifth preset temperature threshold is greater than the third preset temperature threshold.

[0040] For example, if the real-time temperature of the temperature sensor is greater than or equal to the fifth preset temperature threshold T5, the electric heating device will reduce its power. T5 can be a relatively high protection threshold, such as 75℃. This means that in winter mode, the system allows the electric heating device to operate at full power even at higher temperatures to prioritize rapid heating, only reducing power when the temperature reaches a sufficiently high level (meaning that abnormal overheating may actually occur).

[0041] If the real-time temperature of the temperature sensor is less than the sixth preset temperature threshold T6, the electric heating device will either resume or maintain full-power operation. T6 can be set to a reasonable hysteresis level lower than T5, such as 70°C, to avoid frequent switching near the threshold.

[0042] After determining the environmental mode through the above process, if the system enters the first temperature control mode, that is, when the operating status of the electric heating device is monitored by the heating rate, the system can respond to the electric heating device starting at full power and obtain the heating rate of the temperature sensor in the electric heating device within the preset monitoring window.

[0043] In some feasible implementations, the preset monitoring window can include a first monitoring window and a second monitoring window. For both monitoring windows, the monitoring start time can be determined based on empirical data from safety testing and thermodynamic model analysis. Specifically, for the acquisition of the heating rate, the system can first determine the first time period elapsed after the electric heating device starts, and then calculate the first heating rate of the sensing element within the first monitoring window starting from the first time period. Furthermore, considering the fluctuations and uncertainties of heat transfer, single window judgments may be sporadic. Therefore, if the first heating rate is less than a preset rate threshold, the second heating rate of the sensing element is calculated within the second monitoring window starting after the end of the first monitoring window. Based on the acquired heating rate, in subsequent detection processes, the system can perform anomaly detection on the operating status of the electric heating device based on either the first or second heating rate. This abandons the passive waiting for a single absolute temperature and adopts active monitoring of the heating rate of the sensing element within the critical window period after the electric heating device starts, using this as an early, dynamic indicator to determine whether the device is in an "abnormal working state" (such as being covered).

[0044] In some examples, based on empirical data from safety testing and thermodynamic model analysis, the 4th to 7th minute after product startup is a critical decision window for whether the temperature rise of the covering material will get out of control. Therefore, the system can predefine a first time period t_delay, for example, 4 minutes and 59 seconds (299 seconds), and the high-precision timer inside the main control MCU starts counting from the moment the device starts at full power.

[0045] When the timer reaches the first time interval t_delay, the system enters the first preset monitoring window (e.g., the first monitoring window W1). The duration of W1 can be set to a reasonable sampling period, such as 1 minute (60 seconds). Within this window, the main control MCU reads the voltage value of the temperature sensor via the ADC (analog-to-digital converter) module at a high frequency (e.g., once per second) and converts it into a temperature value T(t) based on its NTC (negative temperature coefficient thermistor) characteristic curve. At the end of the window, the system uses the acquired temperature time series to calculate the first heating rate R1 of the temperature sensor within the first monitoring window through linear regression or simple difference calculation (e.g., (T_end-T_start) / window duration), typically in °C / minute.

[0046] Furthermore, considering the fluctuations and uncertainties in heat transfer, single-window judgments may occur sporadically. Therefore, this invention sets up a second-level confirmation window. If the first heating rate R1 is less than a preset rate judgment threshold R_th (e.g., 5°C / minute), the system considers that no clear abnormal heating signal has been detected within the first window. At this time, the system will not immediately switch to normal control, but will immediately start the second preset monitoring window (such as the second monitoring window W2) after the first monitoring window W1 ends. The duration of W2 is also set to 1 minute. Within W2, the system collects temperature in the same manner and calculates the second heating rate R2 of the temperature sensor within the second monitoring window.

[0047] In the above process, a robust abnormal trend detection filter is formed based on the "two-level monitoring window" mechanism (W1 and W2, corresponding to the 4:59-5:59 minutes and 5:59-6:59 minutes after the electric heating equipment is started and running at full power, respectively). This not only avoids misjudgment caused by instantaneous fluctuations, but also ensures that signals can be captured in a timely manner under continuous abnormal temperature rise. The entire judgment process is strictly limited to these two consecutive 1-minute windows. After that, no matter what the result is, the system will enter the steady-state control stage, ensuring the timeliness and determinism of the algorithm.

[0048] Step 302: If the electric heating device is detected to be in an abnormal state based on the heating rate, a heating promotion operation is performed on the electric heating device to trigger the temperature limiter in the electric heating device.

[0049] After determining the heating rate, the system can use this rate to determine if the electric heating device is in an abnormal state. If the heating rate indicates an abnormal state, the system executes a heating-promoting operation to trigger the temperature limiter in the device, causing the power of the heating device to drop to zero. This allows the system to monitor the heating process by controlling the heating rate. On one hand, this accurately detects whether the device is in an abnormal state, improving the response rate of overheat protection and ensuring timely triggering of protection. On the other hand, when an abnormal state is detected, the heating-promoting operation triggers the temperature limiter, providing safety protection and preventing temperature runaway under abnormal conditions (such as excessive temperature of the covering), thus improving the controllability of the electric heating device during use.

[0050] In some feasible implementations, if the heating rate is greater than or equal to a preset rate threshold, the current temperature of the temperature sensing element is obtained, and a corresponding processing strategy is selected based on this current temperature. If the current temperature is less than a first preset temperature threshold, a heating promotion operation is performed on the electric heating device to increase the current temperature of the temperature sensing element, and the current temperature of the temperature sensing element after the heating is increased is obtained. Then, the obtained new current temperature is compared with the first preset temperature threshold until the current temperature is greater than or equal to the first preset temperature threshold. Then, the temperature limiter in the electric heating device is triggered, and the operating power of the electric heating device is reduced to 0.

[0051] Optionally, the system's decision-making process begins with determining whether the electric heating device is in an abnormal state. This abnormal state is determined based on a first heating rate calculated by a first monitoring window or a second heating rate calculated by a second monitoring window. If either the first or second heating rate is greater than or equal to a preset rate threshold, the system can determine that the electric heating device is in an abnormal state (e.g., covered by an object). In other words, if overheating is detected in either of the two monitoring windows, an alarm will be triggered. The system can then further obtain the current temperature of the temperature sensor. The current temperature of the temperature sensor can then proactively and reliably trigger the temperature limiter connected in series in the main heating circuit of the electric heating device.

[0052] In its implementation, when the heating device is determined to be in an abnormal state based on the heating rate, the system can obtain the current temperature T_current of the temperature sensor and use this instantaneous temperature value as a reference point. Then, a corresponding temperature threshold judgment loop is triggered: if the current temperature T_current is less than the first preset temperature threshold T1 (where T1 can be the target trigger temperature, i.e., the standard operating temperature of the mechanical temperature limiter, such as 90℃), and if the current temperature has not yet reached 90℃, it means the temperature limiter has not yet reached its physical trigger point. At this time, the system can perform a temperature-boosting operation on the heating device, i.e., controlling the heating device to operate at full power and not performing a power-reduction operation based on the current temperature of the temperature sensor. Through this "reverse operation," the power drive circuit is commanded to maintain the relay closed, allowing the heating element to continuously heat at maximum power, actively and quickly raising the temperature of the temperature sensor (and its associated heat conduction path), shortening the time to reach the temperature limiter's operating temperature.

[0053] While maintaining full power, the system can continuously (e.g., every 5 seconds) acquire the current temperature T_current of the temperature sensor and repeatedly check it; this process can be a dynamic loop. If the current temperature T_current is greater than or equal to the first preset temperature threshold T1 (90℃), it means that under the drive of the "heating promotion operation," the temperature of the temperature sensor has rapidly climbed to the action point of the temperature limiter. At this time, the system triggers the temperature limiter in the electric heating device. This process is not a software instruction, but a physical result: because the temperature sensor and the temperature limiter are connected through a mechanical structure (such as a bimetallic strip) or a tight thermal coupling, reaching 90℃ will cause the temperature sensing element inside the temperature limiter to deform, mechanically tripping (breaking) its contacts connected in series in the heating circuit.

[0054] In the above process, the direct impact of the thermostat tripping is that the operating power of the electric heating equipment is reduced to 0. The main heating circuit is physically cut off, and heating stops. Optionally, the thermostat can be a mechanical manual thermostat. This type of thermostat can be manually reset. Once it trips, it cannot automatically recover. The user must manually press its reset button after the danger has been eliminated (such as removing the covering) before the equipment can be powered on again. This provides the highest level of safety guarantee and eliminates the risk of the equipment automatically restarting if the abnormal state continues.

[0055] Through the above process, based on the flow of "meeting the rate target → actively maintaining full power heating → until the temperature limiter physically activates", the safety test problem of the temperature limiter not activating due to slow heating is effectively solved. Through the prediction and active intervention of intelligent algorithms, it is ensured that the temperature limiter can be reliably triggered within the safe time window under any abnormal heat dissipation conditions, thus ensuring the safety of electric heating equipment.

[0056] Furthermore, if the system has completed both monitoring windows (W1 and W2), but the calculated first heating rate R1 and the second heating rate R2 are both less than the preset rate threshold R_th (5℃ / minute), the system determines that the electric heating device is not in an abnormal state based on the heating rate, which corresponds to a safe working state where the product is dissipating heat normally and the surface is uncovered. At this time, the system can switch to a refined constant temperature comfort control mode, continuously acquiring the current temperature of the temperature sensor and then adjusting the power based on the current temperature to maintain a comfortable and energy-saving room temperature range.

[0057] Optionally, if no abnormal state is detected in the electric heating device based on the heating rate, the current temperature of the temperature sensor is obtained; if the current temperature is greater than or equal to the third preset temperature threshold, the electric heating device is controlled to reduce its power; if the current temperature is less than the third preset temperature threshold but greater than or equal to the fourth preset temperature threshold, the electric heating device is controlled to maintain its current operating state; if the current temperature is less than the fourth preset temperature threshold, the device is controlled to resume full power operation.

[0058] For example, if the current temperature is greater than or equal to a third preset temperature threshold T3, the electric heating device will reduce its power. T3 can be set as a comfortable upper temperature limit, such as 42℃. When the temperature sensor detects that the temperature has reached or exceeded this value, it indicates that the room or the device itself is warm enough. The main control MCU will then control the power drive circuit (e.g., switching the relay to a low power setting, or adjusting the thyristor conduction angle via PWM) to reduce the heating power, preventing overheating and saving energy.

[0059] If the current temperature is less than the third preset temperature threshold T3 (42℃) and greater than or equal to the fourth preset temperature threshold T4, the electric heating device will maintain its current operating state. T4 can be set as the upper limit of a comfortable temperature, such as 40℃. When the temperature is within the narrow "comfort zone" of 40℃ to 42℃, the system maintains its current power output to stably maintain this ideal temperature range.

[0060] If the current temperature is lower than the fourth preset temperature threshold T4 (40℃), the electric heating device will resume full-power operation. Once the temperature falls below the lower limit of the comfort zone, the system will immediately switch back to full power to quickly raise the temperature and ensure an uninterrupted heating experience.

[0061] The control logic described above provides users with an extremely stable and comfortable daily experience in the first temperature control mode, while its low intervention threshold (compared to 75°C in the winter mode) also reflects the safety redundancy considerations of this mode.

[0062] It should be noted that the embodiments of the present invention include, but are not limited to, the examples described above. It is understood that those skilled in the art can make further settings according to actual needs under the guidance of the ideas in the embodiments of the present invention, and the present invention does not limit such settings.

[0063] In this embodiment of the invention, regarding the temperature control process of the electric heating device, after the electric heating device is started at full power, the heating rate of the temperature sensor in the electric heating device within a preset monitoring window is obtained. If the electric heating device is detected to be in an abnormal state based on the heating rate, a heating promotion operation is executed to trigger the temperature limiter in the electric heating device. This monitors the heating process of the electric heating device by measuring the heating rate. On the one hand, it can accurately detect whether the electric heating device is in an abnormal state, improve the response rate of overheat protection, and ensure timely triggering of protection. On the other hand, when an abnormal state is detected, the heating promotion operation triggers the temperature limiter of the electric heating device. By actively triggering the temperature limiter, safety protection is achieved, avoiding temperature runaway in abnormal states (such as excessive temperature of the covering), and improving the controllability of the electric heating device during use.

[0064] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the following detailed explanation is provided through some specific hardware and software configuration examples and scenario simulations: As an example, the system hardware and underlying software configuration of an electric heating device are as follows: Main control MCU: It has a high-precision timer, multiple ADC channels, and sufficient computing power. The operating frequency is 170MHz, and the built-in floating-point unit is used for real-time calculation of the heating rate.

[0065] Temperature sensing: The temperature sensing element uses a 10K NTC thermistor (B value 3435), which is connected to the MCU's 12-bit ADC channel via a precision voltage divider resistor. The sampling rate is configurable. The ambient temperature sensor uses a digital DS18B20, communicating via a single-bus protocol.

[0066] Power control: The heating element has a power rating of 2200W. Two relays are used to control the "full power" and "low power" (e.g., 1100W) settings respectively, controlled by the MCU's GPIO via optocouplers and driver transistors. A mechanical manual reset temperature limiter (e.g., model KSD301, operating temperature 90±5℃) is directly connected in series in the main power circuit.

[0067] Firmware architecture: Based on the FreeRTOS real-time operating system, multiple tasks are created: Task_Sensor: responsible for periodically reading NTC and DS18B20 data and performing filtering (such as moving average filtering).

[0068] Task_Timer: Responsible for high-precision timing, managing a 4-minute 59-second delay and two 1-minute monitoring windows.

[0069] Task_Control: The core control task, which executes the state machine of the algorithm described in this invention.

[0070] Task_UI: Handles user interface interactions.

[0071] Optionally, referring to FIG4, a schematic diagram of an electric heating device provided in an embodiment of the present invention is shown, wherein the electric heating device includes a temperature sensing element A for collecting temperature to determine the heating rate, which may be disposed at the front shell position of the electric heating device. Accordingly, referring to FIG5, a structural schematic diagram of the temperature sensing element provided in an embodiment of the present invention is shown, and the present invention does not limit its scope.

[0072] Referring to Figure 6, a schematic diagram of the overall control logic provided in this embodiment of the invention is shown. For the electric heating device, after power-on, program detection can be performed. The system determines which program the electric heating device enters by detecting whether the ambient temperature is greater than 19°C. If the ambient temperature is less than or equal to 19°C, the electric heating device enters the low-temperature program; if the ambient temperature is greater than 19°C, the electric heating device enters the safety program. Accordingly, after entering the safety program and running for the corresponding duration, at 4 minutes and 59 seconds, the temperature sensor in the electric heating device can begin to perform corresponding heating rate detection. If the detected heating rate is greater than or equal to 5°C / min between 4 minutes and 59 seconds and 5 minutes and 59 seconds, the current temperature of the temperature sensor is further detected. If the current temperature of the temperature sensor is greater than or equal to 90°C, the manual temperature limiter is triggered. If the current temperature of the temperature sensor is less than 90°C, the current operating state is maintained, and the manual temperature limiter is triggered through "active heating." If the temperature is below 88℃, the highest heating setting will be used to trigger the manual temperature limiter through "active heating." (It should be noted that for scenarios below 90℃ and below 88℃, the former only needs to maintain the current heating power, while the latter operates at the highest heating power. If the electric heating device is already at the highest heating power, and the temperature sensor detects a heating rate greater than or equal to 5℃ / min, and the current temperature of the temperature sensor is less than 90℃, the electric heating device will maintain the highest heating power, thereby triggering the manual temperature limiter through "active heating.") Correspondingly, if the detected heating rate is less than 5℃ / min between 4 minutes and 59 seconds and 5 minutes and 59 seconds, the temperature sensor can detect the heating rate in the next minute, that is, between 5 minutes and 59 seconds and 6 minutes and 59 seconds, and execute the same processing procedure as described above.

[0073] Furthermore, if the detected heating rate is less than 5℃ / min between 5 minutes and 59 seconds and 6 minutes and 59 seconds, it is confirmed that the electric heating device is in normal working condition. The electric heating device can be controlled accordingly based on the temperature of the temperature sensor. Specifically, if the temperature sensor temperature is ≥42℃, the system operates at reduced power; if the temperature sensor temperature is <40℃, the system resumes high-heat operation; if 40℃ ≤ temperature sensor temperature <42℃, the temperature sensor maintains its previous (current) state. In daily use, the system stably maintains a comfortable range of 40-42℃, ensuring a good heating experience.

[0074] Accordingly, the following examples are provided for each scenario: For scenario A: Safety test (felt strip covering abnormal working state) Environment: Laboratory 23℃, standard test felt strip covering the surface of an electric oil heater.

[0075] System behavior: Upon power-on, the ambient temperature is read as 23℃ > 19℃, and the system enters the first temperature control mode, starting at full power.

[0076] First 4 minutes and 59 seconds: The felt strips provide insulation, and heat accumulates inside the oil heater. However, due to the delay in heat transfer to the temperature sensor, the temperature rise of the temperature sensor is gradual.

[0077] At 4 minutes and 59 seconds, entering window W1 (4:59-5:59): Internal heat gradually rises through conduction, causing the temperature sensor to heat up. Due to the poor heat dissipation caused by the covering, the temperature sensor experiences a significant temperature rise within this window. Assume the calculated R1 = 7.2℃ / min > 5℃ / min.

[0078] Decision: Immediately classify as "abnormal state". Initiate warming-up cycle.

[0079] Temperature rise phase (starting around the 6th minute): The system maintains full power. Under continuous high heat output, the temperature of the sensing bulb rises rapidly.

[0080] At approximately 6 minutes and 30 seconds: the temperature of the sensing bulb reached 90°C. The bimetallic strip of the mechanical temperature limiter, which was tightly thermally coupled to it, deformed, and the contacts snapped off with a "click." The main heating circuit was forcibly cut off, and the power dropped to 0. The temperature of the felt strip was effectively contained before it reached the dangerous critical point.

[0081] In scenario A, the temperature limiter was reliably activated approximately 6.5 minutes after the test began by anticipating the event using a rate signal of 7.2℃ / min and actively maintaining full power, thus passing the safety test.

[0082] For scenario B: Normal daily use (no cover, living room heating) environment: 15℃ in the living room at home, with the product placed normally.

[0083] System behavior: Upon power-on, if the ambient temperature is 15℃≤19℃, the system enters the second temperature control mode.

[0084] Throughout the process: The system implements simple dual-threshold control at 75℃ / 70℃. Due to good heat dissipation, the temperature sensor rarely reaches 75℃, and the equipment basically operates at full or high power continuously, quickly raising the room temperature and meeting users' winter needs for "powerful heating".

[0085] In scenario B, users enjoy a robust heating experience. In terms of safety, even in the event of an anomaly (which is extremely rare), there is a safety net protection against high temperatures up to 75°C.

[0086] For scenario C: Light use in spring and autumn (ambient temperature is high, but not for testing) Environment: Office 22℃, used for local heating.

[0087] System behavior: Upon power-on, the ambient temperature is read as 22℃ (>19℃), and the system enters the first temperature control mode. Full power startup is initiated.

[0088] Monitoring window period: Due to normal heat dissipation, the temperature rise rate of the sensing bulb is slow within the two 1-minute windows. Assuming R1 = 2.1℃ / min and R2 = 1.8℃ / min, both are much less than 5℃ / min.

[0089] Decision: No abnormality detected, switch to comfort control.

[0090] Comfort control phase: The system begins precise PID control within a narrow range of 40℃-42℃. When the temperature sensor reaches 42℃, the power is reduced to half; when the temperature drops back to 40℃, full power is restored. The room temperature is stably maintained at a warm but not sweltering comfortable level, and it is very energy-efficient.

[0091] In scenario C, continuous high-power operation of the device could lead to localized overheating and energy waste. The solution presented in this invention provides a precise, air-conditioning-like temperature control experience, demonstrating its intelligence and user-friendliness.

[0092] Through the above process, this invention effectively resolves the long-standing conflict between safety and user experience in electric heating devices by introducing a two-tiered intelligent architecture: "ambient temperature adaptive dual-mode" and "rate-based anomaly prediction and proactive protection." This allows the product to not only keenly detect and decisively handle risks in high-risk environments (high temperatures, when covered) to ensure absolute safety, but also provide a comfortable experience of powerful heating or precise temperature control during daily use (low temperatures, normal heat dissipation). Furthermore, all logic is completed in real-time within the local main control MCU, eliminating the need for a network or cloud, resulting in rapid response and high reliability. This provides the electric heating device industry with an innovative and highly practical temperature control solution.

[0093] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0094] Referring to Figure 7, a structural block diagram of a temperature control device for an electric heating device provided in an embodiment of the present invention is shown. Specifically, it may include the following modules: a rate acquisition module 701, used to acquire the heating rate of the temperature sensing bulb in the electric heating device within a preset monitoring window after the electric heating device is started at full power; and an execution module 702, used to execute a heating promotion operation for the electric heating device to trigger the temperature limiter in the electric heating device if the electric heating device is detected to be in an abnormal state based on the heating rate.

[0095] In some feasible implementations, the execution module is specifically used to: if the heating rate is greater than or equal to a preset rate threshold, obtain the current temperature of the temperature sensing pack; if the current temperature is less than a first preset temperature threshold, perform a heating promotion operation on the electric heating device to increase the current temperature of the temperature sensing pack; if the current temperature is greater than or equal to the first preset temperature threshold, trigger the temperature limiter in the electric heating device to reduce the operating power of the electric heating device to 0.

[0096] In some feasible implementations, the preset monitoring window includes a first monitoring window, and the rate acquisition module is specifically used to: determine the first time period elapsed after the electric heating device is started; in some feasible implementations, the preset monitoring window also includes a second monitoring window, and the rate acquisition module is further used to: if the first heating rate is less than the preset rate threshold, calculate the second heating rate of the temperature sensing bulb within the second monitoring window starting from the end of the first monitoring window.

[0097] In some feasible implementations, the execution module is specifically used to: if the first heating rate or the second heating rate is greater than or equal to a preset rate threshold, then obtain the current temperature of the temperature sensing bag.

[0098] In some feasible implementations, the execution module is specifically used to: control the electric heating device to maintain full power operation and not to perform a power reduction operation based on the current temperature of the temperature sensor.

[0099] In some feasible implementations, the system further includes: a temperature acquisition module, used to acquire the current temperature of the temperature sensor if no abnormal state is detected in the electric heating device based on the heating rate; a first control module, used to control the electric heating device to reduce its power if the current temperature is greater than or equal to a third preset temperature threshold; a second control module, used to control the electric heating device to maintain its current operating state if the current temperature is less than the third preset temperature threshold and greater than or equal to a fourth preset temperature threshold; and a third control module, used to control the system to restore full power operation if the current temperature is less than the fourth preset temperature threshold.

[0100] In some feasible implementations, the method further includes: an ambient temperature acquisition module, used to acquire the ambient temperature of the environment in which the electric heating device is located in response to the power-on of the electric heating device; a first mode selection module, used to execute a first temperature control mode if the ambient temperature is greater than a second preset temperature threshold; and a second mode selection module, used to execute a second temperature control mode if the ambient temperature is less than or equal to the second preset temperature threshold; wherein the first temperature control mode includes the temperature control method described in the embodiments of the present invention.

[0101] In some feasible implementations, the following are also included: a fourth control module, used to control the electric heating device to reduce power operation if the real-time temperature of the temperature sensing element is greater than or equal to a fifth preset temperature threshold in the second temperature control mode; a fifth control module, used to control the electric heating device to resume or maintain full power operation if the real-time temperature of the temperature sensing element is less than a sixth preset temperature threshold; wherein the fifth preset temperature threshold is greater than a third preset temperature threshold.

[0102] In some feasible implementations, the first temperature control mode is used to control the device embodiment. Since it is basically similar to the method embodiment, the description is relatively simple. For relevant parts, please refer to the description of the method embodiment.

[0103] In addition, embodiments of the present invention also disclose an electric heating device, comprising at least: a heating unit; a temperature sensing bulb; a temperature limiter; and a controller electrically connected to the heating unit and the temperature sensing bulb respectively; wherein the controller is used to execute the temperature control method as described in the embodiments of the present invention.

[0104] In some feasible implementations, the temperature limiter is a mechanically manually reset temperature limiter.

[0105] Furthermore, this embodiment of the invention also provides an electronic device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the various processes of the temperature control method embodiment of the electric heating device described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0106] Furthermore, this embodiment of the invention also provides a readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the temperature control method embodiment for the electric heating device described above, and achieves the same technical effect. To avoid repetition, it will not be described again here. The readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0107] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0108] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, EEPROM, Flash, and eMMC, etc.) containing computer-usable program code.

[0109] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0110] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0111] These computer program instructions may also be loaded onto a computer or other programmable data processing terminal equipment to cause a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable terminal equipment, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0112] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0113] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0114] The above provides a detailed description of a temperature control method and a temperature control device for an electric heating device provided by the present invention. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A temperature control method for an electric heating device, characterized in that, include: In response to the start-up of the electric heating device at full power, the heating rate of the temperature sensing bulb in the electric heating device within a preset monitoring window is obtained; If the electric heating device is detected to be in an abnormal state based on the heating rate, a heating acceleration operation is performed on the electric heating device to trigger the temperature limiter in the electric heating device.

2. The method according to claim 1, characterized in that, If the electric heating device is detected to be in an abnormal state based on the heating rate, a heating-promoting operation is performed on the electric heating device to trigger the temperature limiter in the electric heating device. This includes: if the heating rate is greater than or equal to a preset rate threshold, obtaining the current temperature of the temperature sensing element; if the current temperature is less than a first preset temperature threshold, performing a heating-promoting operation on the electric heating device to increase the current temperature of the temperature sensing element; if the current temperature is greater than or equal to the first preset temperature threshold, triggering the temperature limiter in the electric heating device to reduce the operating power of the electric heating device to 0.

3. The method according to claim 2, characterized in that, The preset monitoring window includes a first monitoring window. The step of obtaining the heating rate of the temperature sensing element in the electric heating device within the preset monitoring window includes: determining a first time period after the electric heating device is started; and calculating a first heating rate of the temperature sensing element within the first monitoring window starting from the first time period.

4. The method according to claim 3, characterized in that, The preset monitoring window further includes a second monitoring window. The step of obtaining the heating rate of the temperature sensing element in the electric heating device within the preset monitoring window further includes: if the first heating rate is less than the preset rate threshold, then calculating the second heating rate of the temperature sensing element within the second monitoring window starting from the end of the first monitoring window.

5. The method according to claim 4, characterized in that, The step of obtaining the current temperature of the temperature sensing pack if the heating rate is greater than or equal to a preset rate threshold includes: obtaining the current temperature of the temperature sensing pack if the first heating rate or the second heating rate is greater than or equal to a preset rate threshold.

6. The method according to any one of claims 2 to 5, characterized in that, The execution of the temperature-boosting operation for the electric heating device includes: controlling the electric heating device to maintain full power operation and not performing a power-reduction operation based on the current temperature of the temperature sensor.

7. The method according to claim 1, characterized in that, Also includes: If no abnormal state is detected in the electric heating device based on the heating rate, then the current temperature of the temperature sensing bulb is obtained; If the current temperature is greater than or equal to the third preset temperature threshold, the electric heating device is controlled to reduce its power; if the current temperature is less than the third preset temperature threshold but greater than or equal to the fourth preset temperature threshold, the electric heating device is controlled to maintain its current operating state; if the current temperature is less than the fourth preset temperature threshold, the device is controlled to resume full power operation.

8. The method according to claim 1, characterized in that, Also includes: In response to the power-on of the electric heating device, the ambient temperature of the environment in which the electric heating device is located is obtained; if the ambient temperature is greater than a second preset temperature threshold, a first temperature control mode is executed; if the ambient temperature is less than or equal to the second preset temperature threshold, a second temperature control mode is executed; wherein, the first temperature control mode includes the method described in any one of claims 1 to 7.

9. The method according to claim 8, characterized in that, Also includes: In the second temperature control mode, if the real-time temperature of the temperature sensor is greater than or equal to the fifth preset temperature threshold, the electric heating device is controlled to reduce its power; if the real-time temperature of the temperature sensor is less than the sixth preset temperature threshold, the electric heating device is controlled to resume or maintain full power operation; wherein, the fifth preset temperature threshold is greater than the third preset temperature threshold.

10. The method according to claim 8 or 9, characterized in that, The temperature threshold used to control power in the first temperature control mode is lower than the corresponding temperature threshold used to control power in the second temperature control mode.

11. An electric heating device, characterized in that, At least including: Heating unit; Temperature sensing bag; Temperature limiter; And a controller electrically connected to the heating unit and the temperature sensing element respectively; wherein the controller is used to perform the temperature control method as described in any one of claims 1 to 10.

12. The electric heating device according to claim 11, characterized in that, The temperature limiter is a mechanical, manually reset temperature limiter.

13. A temperature control device for an electric heating equipment, characterized in that, include: The rate acquisition module is used to acquire the heating rate of the temperature sensing bulb in the electric heating device within a preset monitoring window after the electric heating device is started at full power. The execution module is configured to perform a temperature-promoting operation on the electric heating device if the electric heating device is detected to be in an abnormal state based on the heating rate, thereby triggering the temperature limiter in the electric heating device.

14. An electronic device, characterized in that, The system includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus; the memory is used to store computer programs; and the processor, when executing the program stored in the memory, implements the method as described in any one of claims 1-10.

15. A readable storage medium having instructions stored thereon that, when executed by one or more processors, cause the processors to perform the method as described in any one of claims 1-10.

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